Furnace for desulphurizing ores



(No Model.)

A. T. SOHUESSLER. PURNAGE FOR DESULPHURIZING 0113s.

ted May 1,1883.

Pate

WITNBSSESP v .INYENTOR @ZBWLM .Rwgwfl 1.6wkmas1w. WWW. BY ATTORNEY UNITED STATES PATENT OFFICE.

AUGUST TH. SOHUESSLER, OF NEWARK, NEW JERSEY.

FURNACE FOR DESULPHURIZING ORES.

SPECIFICATION forming part of Letters Patent No. 276,636, dated May 1, 1883.

Application filed J une .29, 1882.

To all whom it may concern:

Be it known that I, AUG. Tn. ScnUEssLEn, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented new and useful Improvements in Furnaces for Desulphurizing Ores, of which the following is a specification. .pThis invention relates to improvements in that class of furnaces which are employed for -desu'lphurizing ores; and the invention consists essentially in a. furnace composed of a series of furnace-chambers connected at their bottoms by fines which tap a chimney common to all, each chamber having a fire-place, an airsupply opening above and directly over the fire-place, and a steam-pipe in the combustionchamber of the fire-place and over the grate therein, and having a nozzle projecting into the air-opening above the fire-place, the arrangement being such that currents of air are directed onto the gases rising from the fireplaces to effect theircomplete combustion,while at the same time the sulphur in the ore being treated is effectively oxidized and removed. 75-- In the accompanying drawings,Figure 1 represents a horizontal section. Fig. 2 is a vertical section in the plane a m, Fig. l. Similar letters indicate corresponding parts. In the drawings, the letters A A A A designate a series of desulphurizing-chambers which are grouped around a common chimney, B. In the example represented by the drawings I have shown four such desulphurizingchf'ambers; but this number may be varied to suit circumstances. Each of the chambers A A A A is provided with a fire-place, G O t) (3 and with a door, D D D D". The chambers A A. A A are grouped round the common chimney B, and they communicate with this chimney by smoke-fines G G G G. Each of these smoke-fiues communicates with its respective chamber through an opening, 0 c o 0 in the sole of said chamber inside of and beneath the fire-places, and each of the smokeflues is provided with a damper, d d (1 61 so that the communication between'each chamber and the chimney can be opened or closed, as may be required. The chamber A communicates with the smoke-flue G through an opening, a, in the sole of this chamber, the chamber A communicates with the smoke-flue G through an opening, 6, in the sole of this cham- (No model.)

ber, and in the same manner the chambers A A communicate through openings 0 a, respectively, with the smoke-fines G G, respectively, and the communication between the smokefiues G G G G and the openings e m 0 re? spectively, is controlled by dampers f f f f By referring to Fig. l of the drawings it will be seen that the openings 66 e e are situated opposite to the fire-places U G G 0 respectivel y, so that the circulation of the heated products of combustion will take place as follows: If all the chambers have been charged, fires are built in all the fireplaces, the dampers cl, d d andf are closed, the dampersfifflfi and d are opened, and the heated gases of all the fire-places pass through fine G to the chimney. When the ore in chamber A has been desulphurized the damper f is closed and damper is opened, (see Fig. 1,) the fire in fire-place C is drawn out, and the contents of the chamber A are rapidly cooled by a draft of air passing through it and out into the chimney. During the time the chamber A is being emptied and recharged the ore in chamber A is desulphurized, a fresh fire is built in fireplace O, the dampers d and f are closed, and the dampers d and f are opened, the chamber A is cut out and ready to be emptied and recharged, and so on.

In order to efiect complete desulphurization of the ore in the chambers A A A A it is essential that a sufficient supply of atmospheric air shall be admitted to each chamber to efl'ect complete combustion of the heated gases rising from the fire-places, and also to oxidize or burn the sulphur in the ore. This object I have attained by arranging in the walls of each of the desulphurizing-chambers one or more air-supply ch annels, g, through which extends asteamnozzle, h, the air-supply channels being by preference made tapering, as shown in Fig. 2, so that bythe action of the steam-jet a powerful current of air is drawn into the desulphurizingchamber. The steam-nozzles it connect with coils i, situated over the grates in the fire-places O O U so that the steam becomes superheated before it issues from the nozzles and the temperature in the chambers is not perceptibly reduced.

I am aware that kilns have long been known in which a series of furnace-chambers are connected at their bottoms by hot-air fines, each 2 meme of which taps a chimney common to all. Such, therefore, I do not broadly claim. 7

What I claim as new, and desire to secure by Letters Patent, is-- A furnace for desulphurizing ore, consisting of a series of furnace-chambers, each having a fire-place, and all connected by horizontal flues communicating with a chimney common to all, and which respectively open at one end into the bottoms of the several chambers directly beneath the fire-place therein, each chamber having an air-supply opening directly over the fire-place and a steam-pipe in the combustionohamber of the fire-place and over the grate therein having a nozzle projecting into the air- 15' opening above the fire-place for supplying currents of air to effect complete combustion of the gases as they rise from the fire-place and to oxidize or burn the sulphur in the ore, substantially as described.

In testimony whereof I have hereunto set my hand and seal in the presence of two subscribing witnesses.

AUG. TH. SGHUESSLER.

Witnesses:

J. HERIMANN WAHLERS, E. F. KASTENHUBER. 

